Murder at Midnight

I am currently reading Murder at Midnight. It is about a boy named, Fabrizio, he lives with a magician named, Mangus. Mangus`s wifes name is Mistress. Fabrizio has to try to save his master from the king. The king thinks it was Mangus who was making the papers. It was really Maria and her parents who made the papers that were being spread around the town. This is as far as I got inthe book.